Support for default-extensions

[benjaminweb]

sol/doctest#248

How can we get the package description from cabal?
Would it make sense to get the .hs files to parse from cabal, too?

[karun012]

I haven't had the time to maintain this project in a while. Sorry, I won't be able to help you out here.

[debug-ito]

To workaround this problem, I use -optF config.json option. The config.json has the following content to enable the extension you want.

{
    "doctestOptions": ["-XOverloadedStrings", "-XStrictData", "-XGeneralizedNewtypeDeriving", "-XDeriveGeneric"]
}

There are two issues on this approach.

• The "doctestOptions" config field is not documented.
• You have to synchronize config.json and your cabal file manually.